POWER QUALITY MEASUREMENT
1-Phase Energy Monitoring & Load Control
Industrial-grade 480VAC energy metering and scheduled load control for heavy industry — with flexible Wi-Fi, cellular, MODBUS, or power line communications.
ARG INSTRUMENTS
The PM1 measures active, reactive, and apparent power, RMS current and voltage, power factor, line frequency, and cumulative energy across a single 480VAC phase — with 0.1% accuracy across a 4000:1 dynamic range. Add contactor control and you have a complete energy management node.
BUILT FOR INDUSTRY
From the meter to the cloud — measurement, control, communications, and security in one DIN rail module.
0.1% accurate across a 4000:1 dynamic range. Active, reactive, and apparent power. RMS voltage and current. Power factor, line frequency, and cumulative energy.
Wi-Fi 6 (2.4/5GHz), MODBUS TCP/IP, Cellular LTE-M with Onomondo eSIM, or Hybrid Power Line & RF mesh. One protocol selected at order — no network installer required.
External contactor control up to 600VAC / 1.2A, independent of line voltage. Built-in RTC with 48-hour power backup. Non-volatile load schedule storage.
EAP-PSK with 256-bit ECC encryption, configured at the factory. TLS/SSL for all cloud and on-premises connections. Only whitelisted nodes can join the network.
SPECIFICATIONS
| Technical Specifications | |
|---|---|
| Voltage Input | 80–480VAC, single phase (L-L or L-N), 50/60Hz |
| Metering Accuracy | 0.1% across a 4000:1 dynamic range |
| Measured Parameters | Active, reactive & apparent power; RMS voltage & current; power factor; line frequency; cumulative energy |
| Current Input | External CT connection (1 CT) via cage clamp terminals |
| Reporting Interval | 1 second to 1 day (configurable); local storage when offline, auto-sync on reconnect |
| Load Control | External contactor: 80–600VAC coil, 1.2A max, independent of line voltage |
| Real-Time Clock | On-board RTC with 48-hour power backup; non-volatile schedule storage |
| Communication | Wi-Fi 6 (2.4/5GHz, 802.11ax, Matter) — or — MODBUS TCP/IP (57.6–230.4 kbps) — or — Cellular LTE-M/NB-IoT (Onomondo eSIM) — or — Hybrid PLC+RF (CENELEC-B, auto-mesh) |
| Security | EAP-PSK, 256-bit ECC (factory-configured); TLS/SSL cloud & on-premises |
| Power Consumption | 3.5W active / <0.25W standby; OVP Cat II, EN55022 Class B |
| Dimensions | 2.66 × 2.95 × 4.21 in (68 × 75 × 107 mm) |
| Mounting | 35mm DIN rail |
| Operating Temperature | -40°C to +85°C |
APPLICATIONS
The PM1 connects industrial energy data to wherever you need it — cloud dashboards, SCADA systems, or local BMS.
Monitor and report energy consumption across multi-phase 480VAC industrial loads.
Automate load shedding and scheduled switching without a separate PLC.
Deploy in locations without network infrastructure using cellular or PLC mesh.
RESOURCES
Product brief coming soon. Contact us for datasheet and integration documentation.
Get pricing for single units, volume orders, and OEM integration into your energy management system.